This ratchet strap should not be used in place of a real ratchet strap. It can, however, lift up to 20 pounds without showing signs of possible failure. It will require 2 small torsion springs and paper clips for the pins in the red parts in the picture. It will most likely require some modifying of the parts if you choose to print it. You should also have a real ratchet strap to guide you through assembly.